Eletric switch.



J. M. BLAIN. I ELEGTRIG SWITCH APPLICATION FILED JULY 20, 1911.

1,073,023. V mum Se t 9,1913.

$57 0.? M; m m

7 switch as it will appear when-one of the 4 UNITED sTArns PATENT OFFICE.

JAMES MELviN B'LA'IN, 01? SPRING CITY, UTAH.

ELECTRIC SWITCH.

To all whom itmay concern:

-lc it known that l, Janus MELVIN BLAIN, a citizen of the United States, residing at Spring City, in the county of Sanpete and State of Utah, have invented certain new and useful Improvements in Electric hwitches, of which the following is a speci- Iication.

This invention has relation to new and useful improvements in electric switches and the main object thereof is to provide an electric switch by which two circuits may be closed at one time or either one circuitclosed. or both circuits disconnected'at the same time.

A. further object of my invention is to provide an electric switch that will be simple in construction, efiicient in operation andone which may be quickly manipulated.

\Vith the foregoing and other objects in view myv invention consists in the novel features of construction, combination and arrangement of parts as are described in this specification, illustrated in the accompanying drawings, forming a part thereof and particularly pointed out in the appended claim.

Reference being had to the drawings:

-F-igure 1 is a top plan view of my improved switch together with a diagrammatical view of electric wirings and globes, which wirings form two circ1.-its, both'of which are controlled by said switch. Fig. 2 is a vertical, transverse sectional view of said switch. Fig. 3 is atop plan view of said switch, partly in horizontal section, illustrating the circuits is broken.

Referring more particularly to the drawings, which are not drawn to any particular scale, my invention is described as follows:

The numeral 1 indicates a straight line entering the house, the current from which passes through the globes orlamps indicated diagrammatically by the numeral 2, whence a connection is made to the plate 3 by means of a line 4. The numeral 5 also indicates a line entering the house, which is connected to a brass plate 6. This is the main line connection.

7 designates a line leading from the bass plate 8, the curient from which circuit passes through a number of globes or lamps diagrammatically illustrated by the lamp 9. When it is desired to close that circuit determined by the line 5, plates 6 and 8 and Specification of Letters iatent.

Application filed July 20, 1911.

Patented Sept. 9, 1913. Serial No. 639,476.

the line 7, the switch 10 is adjusted so that a cc-nnectionwill be made between plates (3 and 8. When it is desired to close that circuit determined by the lines 1 and 4,

plates 3 and 6 and line 5, then the switch 10 is adjusted so that a connection will be made between plates 3 and 6. Both lines may be sufficient extent to break all connections if desired. The switch -may be slid transversely upon the screw or connection 11, as it is provided with a slot 13 therein which permits sidewise movement thereof. Said plates 3, 6 and 8 are secured to a suitable base by means of screws 16, extending through said plates and into the base, lVhen the switch is placed at the desired point, the thumb screw 11 is tightened sufficiently to secure said switch at such point until it is desired to break a connection or connections already made or make a connection that does not exist.

The switch iseasily manipulated as it is provided with a mounting ll upon its upper face, said mounting being substantially rectangular in shape and provided witha thumb screw 15 composed of material which is a non-conductor of electricity.

The connection of the lines 4, 5 and 7 to their respective plates may be made by ny.

well known means, the preferred construction being illustrated in the drawings.

It will be seen that the switch 10 at all times rests upon the inner end of the plate 6, no matter in what position said switch may have been placed.

Although I have specifically described the particular construction of my switch, yet I may reserve and exercise the right to make such changes therein as do not depart from the spirit of the invention ur the scope of the claim hereunto appended.

Having described my invention, what- I claim as new and desire to secure by Letters Patent,.is:

A switch of the class described c0mprisa base, a pair of contact plates secured to said base at diametrically opposite points plates and having one end thereof disposed intermediate said first plates, a niovableeontact plate having: a slot formed therein'and I resting upon said second-named plate and adapted to bridge one or the other of the first-mentioned plates and the second-named plate and bo'th of said first-mentioned plates and the second-named plate simultaneously,

aset screw passed through the slot in said second-named plate to hold the latter in applied position, a yoke secured to said lastmentioned plate and extending upwardly therefrom, and a manipulating head carried by said yoke whereby the movable contact plate may be manipulated.

In testimony whereof I ailix my signature in presence of two Witnesses.

JAMEL MELVIN BLAIN. Witnesses WILLIAM Sonoriem, JOSEPH DowNARn. 

